APPLE IMAC 21.5" i5 1.6GHz DC 8GB RAM 1TB MAC OSX 10.11 1.6 MK142LL (Late 2015)

Operating System
macOS Sierra

Processor
1.6GHz dual‑core Intel Core i5 (Turbo Boost up to 2.7GHz)

System Memory
8GB of 1867MHz LPDDR3 onboard memory

Storage
1TB

Graphics
Intel HD Graphics 6000

Display
21.5-inch (diagonal) LED-backlit display
1920‑by‑1080 resolution with support for millions of colors

Wireless
Wi-Fi
802.11ac Wi-Fi wireless networking
IEEE 802.11a/b/g/n compatible

Bluetooth

Bluetooth 4.2 wireless technology

Weight
12.5 pounds (5.68 kg)